first off ive got a 05 ss silverado and i bought a used zex 82015 universal dry kit with a 75 shot all i plan to run. i called zex they told me it would work on any efi returnless system now ive got it and it says i have to run a hose to my fuel pressure regulator which in my case is in the tank called zex back and they scrathed there heads with no answers but you should buy a wet kit but if there is any way i can use this one if anyone can help i would be greatfull thanks.

 

If its a dry kit then u should not need to tap into fuel. The nozzle goes before the mass air flow and adds fuel based on its reading of the nitrous

 

if that is true what would i do with the regulator line on the purple box

 

I'm not famaliar with the zex kits so I'm clueless on the regulator line unless that is what controls the nitrous flow based on fuel pressure?
I'd sell the zex kit and check out nitrous outlet kits, they have excellent products and can help you get a good kit if you plan on staying with nitrous for a while.

 

im planning on a turbo. picked up the kit cheap bought it hopping to run for a few months and from what the last guy at zex told me that the fuel pressure regulator side pressureizes the fuel system to add extra fuel (on a lt1). so on a ls1 if a dry shot is sprayed before maf then the ecu adds extra is that correct do you think if i cap off the pressure side and let the ecu add the fuel will that work small shot 75 or smaller

 

if i get this one working buy spraying dry shot through the maf and letting the maf adjust the fuel could i run a 75 shot with no tune or would that be too big thanks

 

Yes. If u spray before the MAF then it will add more fuel since it reads it as a lean condition when spraying. With a 75 shot u should be fine on your tune but I would get a custom tune before spraying and mention that u will be spraying a dry shot.

 

see im trying to not have to get a tune till i get all my turbo stuff installed so what would the biggest shot with a stock tune safely

 

check out this tuner, he is also a sponser here. read what it says about retunes

http://www.gowheatley.com/pricelist.html